Following a U.S. government warning about an iPhone and iPad security threat dubbed Masque Attack, Apple has issued a statement assuring customers that they're probably okay.

Masque Attack, which security vendor FireEye disclosed information about earlier this week, allows attackers to swap in fake apps for legitimate ones, and potentially grab sensitive data. 

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According to the independent Apple blog iMore, Apple issued the following statement: 

"We designed OS X and iOS with built-in security safeguards to help protect customers and warn them before installing potentially malicious software. We're not aware of any customers that have actually been affected by this attack. We encourage customers to only download from trusted sources like the App Store and to pay attention to any warnings as they download apps. Enterprise users installing custom apps should install apps from their company's secure website."

Apple has posted on its site a reminder of safe operating procedures for installing enterprise iOS apps.